A80960HT75SL2GP

Overview

The Altera A80960HT75SL2GP is a 32-bit embedded microprocessor belonging to the i960 Hx superscalar family. It features a core clock of 75 MHz with a 25 MHz external bus clock, operating at a 3:1 multiplier ratio. The device utilizes a 168-pin PGA package and supports a 3.3 V supply voltage with 5 V tolerant inputs. Key architectural elements include a 16 Kbyte instruction cache, an 8 Kbyte data cache, and 2 Kbytes of on-chip Data RAM.

Feature Summary

• Superscalar execution architecture capable of issuing up to three instructions per clock cycle through parallel processing units and independent instruction paths.
• Integrated guarded memory unit providing hardware-enforced memory protection with user/supervisor read/write/execute permissions.
• High-performance pipelined burst bus controller supporting demultiplexed addressing, address pipelining, and fully programmable wait states for efficient memory interfacing.
• On-chip register cache that automatically manages local register sets during procedure calls and returns to sustain high-throughput execution.

Applications

• Industrial automation systems requiring deterministic real-time control
• Avionics and flight control subsystems demanding high reliability
• Image processing and graphics rendering applications
• High-speed communications equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and speed grade. Confirm RoHS compliance status as older revisions may not meet current environmental standards. Check for available errata documentation regarding known design defects before finalizing procurement plans.

Selection Notes

Select this component when a 3:1 clock multiplication ratio is required relative to the system bus frequency. Ensure the design accommodates the 168-pin PGA footprint and thermal requirements. Verify software compatibility with existing i960 codebases if migrating from previous generations like the 80960CA.

Part Context

This processor is part of the Intel 80960Hx series, which succeeded the 80960C family. It maintains binary compatibility with earlier i960 processors while offering enhanced performance through superscalar execution and larger on-chip caches. The HT variant specifically targets applications needing higher internal processing speeds compared to the HA and HD variants.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. Migration to newer architectures requires significant software and hardware redesign due to architectural differences.